Answer: the dam cause no more fertile soil to enter in to farmers land for growing crops hope this helps :)
Explanation: this dam has caused a big change to the lifes of farmers downstream from the dam. Usually when the river flooded once a year before the dam was built. It deposited fertile soil from upstream on its banks downstream. This washed up soil was extremely furtile, and renewed itself every year at in flood season. But now, since the dam was built the annual flood has been stopped. Causing all the farmers downstream to have to use fertilizers to grow their crops, which makes it more expensive.
The Aswan dam stop mineral deposits from reaching the flood plain or the delta. As a result, the fertility of these areas is decreasing resulting in barren land. Now only the Nile river provides irrigation water for surrounding farmlands.
A population's maximum number of individuals which may be supported by an environment or habitat. This occurs after the available resources have been exploited beyond their limit- i.e. the resources have been depleted at a faster rate than they have been renewed. At this stage, the population significantly decreases in size as some individuals die off due to scarcity and competition.
